Method for making steel or titanium products containing a precipitation-hardening nickel-base alloy, and part

Abstract

Combining a precipitation-hardening nickel-base alloy with a steel or titanium substrate makes it very easy to repair parts, the nickel-base alloy having good erosion-resistant properties. A method for producing is disclosed. In particular for repairing, a component having a substrate, in particular turbine blades made of steel or titanium, in particular made of martensitic or precipitation-hardening chromium-rich steels, with a localized deposition weld or with an affixed shaped part, in which a precipitation-hardening nickel-based alloy is used as the localized deposition weld or as the shaped part, in which a laser powder deposition weld or an arc deposition weld is performed.

The invention claimed is: 
     
       1. A method for repairing a leading edge of a turbine blade component, comprising:
 providing the turbine blade component as a substrate, wherein the substrate is made of martensitic or precipitation-hardening chromium-rich steels, wherein the substrate is not a nickel-based alloy or a nickel-based superalloy, and wherein the substrate is X 5 CrNiCuNb 16   −4 , and 
 connecting a precipitation-hardening nickel-based alloy to the substrate proximate the leading edge of the turbine blade component, with a localized deposition weld or with an affixed shaped part, wherein the localized deposition weld is formed by a laser powder deposition weld or an arc deposition weld, 
 wherein the precipitation-hardening nickel-based alloy has a chromium content of 10 wt % to 13.75 wt % and/or a molybdenum content of 0.1 wt % to 2.5 wt %. 
 
     
     
       2. The method as claimed in  claim 1 , in which the shaped part made of a precipitation-hardening nickel-based alloy is connected to the substrate. 
     
     
       3. The method as claimed in  claim 1 , in which the shaped part made of a precipitation-hardening nickel-based alloy is brazed into or onto the substrate. 
     
     
       4. The method as claimed in  claim 1 , having a γ′ fraction≤30%, for the precipitation-hardening nickel-based alloy. 
     
     
       5. The method as claimed in  claim 1 , in which the deposition weld has just one layer. 
     
     
       6. The method as claimed in  claim 1 , wherein the precipitation-hardening nickel-based alloy is corrosion-resistant, nickel chromium alloy. 
     
     
       7. A component, comprising:
 a substrate, wherein the substrate is a turbine blade made of martensitic or precipitation-hardening chromium-rich steel, wherein the substrate is not a nickel-based alloy or a nickel-based superalloy, and wherein the substrate is X 5 CrNiCuNb 16   −4 , and 
 a precipitation-hardening nickel-based alloy, wherein the precipitation-hardening nickel-based alloy is present only locally on a leading edge of the turbine blade as a deposition weld or as a shaped part, further wherein the deposition weld is formed by a laser powder deposition weld or an arc deposition weld, 
 wherein the precipitation-hardening nickel-based alloy has a chromium content of 10 wt % to 13.75 wt % and/or a molybdenum content of 0.1 wt % to 2.5 wt %. 
 
     
     
       8. A turbine blade component, the turbine blade component comprising:
 a substrate, wherein the substrate is not a nickel-based alloy or a nickel-based superalloy, and wherein the substrate is TiAl 6 V 4 ; and 
 a precipitation-hardening nickel-based alloy having a chromium content of 10 wt % to 13.75 wt % and/or a molybdenum content of 0.1 wt % to 2.5 wt %; 
 wherein the precipitation-hardening nickel-based alloy comprises at least one of:
 a shaped part, located only locally on the substrate in a leading edge region of the turbine blade component, wherein the shaped part is brazed to the substrate; and 
 a deposition weld located only locally on the substrate in the leading edge region of the turbine blade component.